5. Maxillary palp longer than the head, segments 3 and 4 extremely long, the third segment (counting from the base) at least half the head length and usually more; psammophore present.
('honey ants' of the southwest, collected in southern and western Kansas)

...Myrmecocystus*

&nbsp&nbsp&nbsp Maxillary palp not longer than the head (Fig. 36), segments 3 and 4 short, the third segment (counting from the base) much shorter than half the head length); psammophore absent.